从第二个表过滤关键字

Question

我有两张桌子

员工

id    employee_name  JobTitle     
---------------------------
1     John            CEO 
2     Ely             MANAGER    
3     Marcus          MANAGER    
4     Steve           CEO 
5     Fritz           ASSISTANT   
6     Orly            ANALYST
7     Carlo           ANALYST      
7     Lee             MANAGER

JobTitle过滤器

filter_id     JobTitle_keyword     
---------------------------
1               CEO 
2               MANAGER  

使用JobTitle_keyword作为过滤关键字是否可行？ 所以，如果我运行查询......结果就是这样。

id    employee_name  JobTitle     
---------------------------
1     John            CEO 
2     Ely             MANAGER    
3     Marcus          MANAGER    
4     Steve           CEO      
7     Lee             MANAGER

Answer 1

您需要加入表格： -

SELECT emp.* 
FROM   Employees emp 
INNER  JOIN JobTitleFilter Job 
ON     emp.JobTitle = Job.JobTitle_Keyword

OR

Select emp.id,emp.employee_name,emp.JobTitle 
FROM Employees as emp,JobTitle as Job 
Where emp.JobTitle= Job.JobTitle_Keyword

SQL FIDDLE

Answer 2

是的，您可以使用join在MySQL中执行此操作。

SELECT t1.* 
FROM   Employees t1 
JOIN   JobTitleFilter t2 
ON     t1.jobtitle = t2.jobtitle_keyword

检查它是否在this SQL fiddle。

Answer 3

尝试这个..

SELECT id,employee_name,JobTitle 
FROM Employees e 
INNER JOIN JobTitleFilter j ON e.JobTitle = j.JobTitle_Keyword

或者您也可以试试这个......

SELECT id,employee_name,JobTitle 
FROM Employees e 
where e.JobTitle in (Select JobTitle_Keyword from JobTitleFilter)

SQL FIDDLE